<div class="nav">
    <div class="nav__containter">
        <a href="index.html" class="nav__logo"></a>
        <ul class="nav__menu">
            <li @@if (context.index==='active' ) { class="active" }>
                <a href="index.html">首页</a>
            </li>
            <li @@if (context.introduce==='active' ) { class="active" }>
                <a href="introduce.html">产品介绍</a>
            </li>
            <li>
                <a target="_block"
                    href="https://youmigrhl.tmall.com/?spm=a220o.1000855.w5001-21409663000.8.526a5c3abXUZnm&scene=taobao_shop">商城</a>
            </li>
            <li @@if (context.activity==='active' ) { class="active" }>
                <a href="activity.html">好孕来</a>
            </li>
            <li @@if (context.about==='active' ) { class="active" }>
                <a href="about-1.html">关于</a>
            </li>
            <li @@if (context.download==='active' ) { class="active" }>
                <a href="download.html">下载</a>
            </li>
            <li @@if (context.contact==='active' ) { class="active" }>
                <a href="contact.html">联系我们</a>
            </li>
        </ul>
    </div>
</div>